Admin actions for Flagged comments

[okbel]

What does this PR do?

• Adds Admin actions for Flagged comments
• Changes null for NONE
• Solves the Flag Queue issue. It returns only NONE or PREMOD statuses for flagged comments.
• Old routes, and old actions clean up. (/comments endpoint free)

How do I test this PR?

• Flag a comment
• Go to Moderation
• Check the actions for flagged comments

[jde]

Comments are remaining in the flag queue after being ACCEPTED.

The flag queue should not show comments that have already been acted on by a moderator (aka, ACCEPTED or REJECTED)

[jde]

Also, in a related issue, I'm seeing rejected comments in the All list. The All list should only show comments that need moderator attention (those in the Premod and Flagged lists).

Sorry this is confusing and not well documented. Design is working on making this section clearer.

[okbel]

@jde The 'All Queue' was removed after a Design Meeting until further research is completed. (It wasn't updated to master)

About the comments that have been ACCEPTED or REJECTED showing in the Flagged Queue. I'm working on a workaround for this apollographql/graphql-tag#47 since I need to perform a statuses: [null, PREMOD] and I'm getting an error because of null. (Only happens on the FE. The Query is valid)

[okbel]

Updated and ready to be tested! (Description updated too) Super thanks to @wyattjoh who addressed this super quickly. Also, we removed all the actions with /comments endpoints involved, and some old routes!

@jde